CADC-8575 CADC-9186 Changed caom2-persist to use Java 8 so that it compiles.
CADC-8575 CADC-9186 Changed caom2-persist to use Java 8 so that it compiles.

opencadc/caom2db,pdowler/caom2db,opencadc/caom2db,pdowler/caom2db